Divide By Zero Error in Edge Case with Automatic Image resizing

[ctsims]

There is a bug in automated image resizing when an image's existing / native size size is exactly the width of the screen.

Discovered with a specific image and replicated with the following virtual device profile:

Adding this 456x456 image as the multimedia image for a question label with the above device screen parameters should result in a crash. I can't quite remember if the bug was when this image was 456x456 or 480x480 (exact screen size or size minus padding maybe), but resizing to one of those should work.

Further Context: https://dimagi.atlassian.net/browse/SUPPORT-16630

[ctsims]

Flagging @dannyroberts for Mobile Backlog building